Spectroscopy of N+2 Meinel bands and CO+ comet tail bands

15 October 1986

journal article
research article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 85 (8) , 4269-4275
https://doi.org/10.1063/1.451799

Abstract

The N⁺₂[X² Σ⁺_g(v‘=0)– A ²Π_u(v’=5)] Meinel band and the CO⁺[X ²Σ⁺(v‘=0)– A ²Π(v’=1,2)] comet tail bands have been measured with Doppler‐limited resolution in a selected ion flow tube (SIFT) apparatus using laser induced charge transfer. The charge transfer medium was Ar, which does not react with those ions in their ground levels, but undergoes a strong charge transfer reaction with the excited states under consideration here. The use of a single mode laser and the SIFT technique led to much higher signal‐to‐noise than obtained in earlier work. These measurements are the first reported with Doppler‐limited resolution on any of these bands, and are analyzed to provide substantially improved molecular constants for the excited states involved in the transitions.

Keywords

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